Home / 1,490,221.40-2,234,078.22-648,138.92

Finding the Fourth Proportional to 1,490,221.40, 2,234,078.22 and 648,138.92

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Solution

The fourth proportional to 1,490,221.40, 2,234,078.22 and 648,138.92 is: 971,663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,221.40 : 2,234,078.22 = 648,138.92 : x
  2. Step 2: Convert to fraction form
    1,490,221.40/2,234,078.22 = 648,138.92/x
  3. Step 3: Cross multiply
    1,490,221.40x = 2,234,078.22 × 648,138.92
  4. Step 4: Simplify right side
    1,490,221.40x = 1,447,993,044,706.32
  5. Step 5: Solve for x
    x = 1,447,993,044,706.32/1,490,221.40
  6. Step 6: Final answer
    x = 971,663.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.